Afk pig / Creeper farm designs

[GingerBread]

So I’ve read that pig and creeper farms are the best ways of making money however I’m wondering if anyone has the best designs for these farms

 

[BlackNinja6050PL]

Grinder with lava?

 

[mlggaimer]

Cactus

 

[Deleted member 489420]

lava plsu fall damge for pigs to cook them
for creepers only fall damage

use only spawnerrs lvl 1

 

[GingerBread]

i sort of guessed this however is there any reason these are the best? Like couldn’t I just use sheep instead?
Thanks for the answer though

 

[FuriousCorgi481]

Sheep don't give as much cash I think because wool is balanced for crafting with string